[Solved] I’ve been told to convert these lines to dapper, I studied dapper syntax and all, not getting how to do it

Utkarsh Gangwar Asks: I’ve been told to convert these lines to dapper, I studied dapper syntax and all, not getting how to do it
Below are the given code lines. Can anyone help or suggest a way?

Code:
var totalTransaction = _transactionDAL.GetCountWithDependenciesWhere(filter);
            var transactionDtoList = _transactionDAL.GetAllWithDependenciesWhere(filter, t => t.Order.PaidTime, SortOrder.Descending, from, pageSize,
                new Expression<Func<Transaction, object>>[] { t => t.Order.Store, t => t.VendorTransactions }).MapListProperties<Transaction, TransactionDTO>();
            var transactionIDs = transactionDtoList?.Select(t => t.ID).ToList();
            var vendorSalesOrders = transactionDtoList.SelectMany(t => t.VendorTransactions.Select(vt => vt.VendorSalesOrder)).ToList()
                .ConcatWithNullCheck(transactionDtoList.SelectMany(t => t.ComboTransactions.SelectMany(ct => ct.VendorTransactions).Select(vt => vt.VendorSalesOrder)).ToList());

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